1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
========== licence begin GPL
Copyright (C) 2002-2003 SAP AG
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
========== licence end
*/
package com.sap.dbtech.util;
import com.sap.dbtech.jdbc.packet.RequestPacket;
import com.sap.dbtech.jdbc.translators.ConversionExceptionSapDB;
import java.util.Hashtable;
/**
* Title: SAP DB JDBC Driver 3.0
* Description: Implementation of a JDBC Driver for SAP DB witch fulfill the JDBC 3.0 Standard
* Copyright: Copyright (c) 2001
* Company: SAP AG
* @author
* @version 1.0
*/
public class GarbageCursor extends GarbageCan {
private Hashtable garbage;
public GarbageCursor() {
super(1);
this.garbage = new Hashtable();
}
public void throwIntoGarbageCan (Object obj) {
this.garbage.put(obj,obj);
}
protected int getGarbageSize(){
return this.garbage.size();
}
public synchronized boolean emptyCan(com.sap.dbtech.jdbc.packet.RequestPacket requestPacket)
{
if(currentEmptyRun2)
return false;
currentEmptyRun2=true;
boolean packetActionFailed=false;
java.util.Enumeration cn = this.garbage.keys();
while(cn.hasMoreElements() &&
!packetActionFailed) {
Object o=this.garbage.remove(cn.nextElement());
packetActionFailed = ! packetAction(requestPacket, o);
if(packetActionFailed) {
this.garbage.put(o,o);
}
}
currentEmptyRun2=false;
return !packetActionFailed;
}
public void emptyCan () {
this.garbage.clear();
}
public boolean packetAction(RequestPacket requestPacket, Object obj) {
try {
return requestPacket.initDbsCommand("CLOSE \"" + ((String) obj)
+ "\"", false, false, java.sql.ResultSet.TYPE_FORWARD_ONLY);
} catch (Exception e) {
return false;
}
}
public boolean restoreFromGarbageCan (Object obj){
boolean erg = (this.garbage.remove(obj) != null)?true:false;
return erg;
}
}
|
